How many different types of tRNA are there? (Hint: This is the number of “words” in the genetic language.)        

P = purple flower p = white flower S = smooth pod s = rough pod PpSs (male) x PpSs (female) PS Ps pS ps PS PPSS PPSs PpSS PpSs Ps PPSs PPss PpSs Ppss pS PpSS PpSs ppSS ppSs ps PpSs Ppss ppSs ppss The homozygous recessive organism is represented by the genotype ___________.                                         

Genetic diversity is important because it __________.                                         

An individual with identical (the same) alleles on homologous chromosomes is __________ for the trait.  

What is the function of a chromosome’s centromere?                              

G is the dominant allele for green peas g is the recessive allele for yellow peas Cross is Gg (male) x Gg (female) G g G GG Gg g Gg gg The phenotypic ratio shown on this cross is __________.                                         

In the late 1800s, scientists knew very little about the genetic material. What did they know?        

How many genes are in a typical human chromosome?                                         

What happens during the S portion of interphase?  

What happens during cytokinesis?